2008-08-06 02:13:06 +08:00
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"""
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Refactored the GEOS interface. Improvements include:
* Geometries now allow list-like manipulation, e.g., can add, insert, delete vertexes (or other geometries in collections) like Python lists. Thanks, Aryeh Leib Taurog.
* Added support for GEOS prepared geometries via `prepared` property. Prepared geometries significantly speed up certain operations.
* Added support for GEOS cascaded union as `MultiPolygon.cascaded_union` property.
* Added support for GEOS line merge as `merged` property on `LineString`, and `MultiLineString` geometries. Thanks, Paul Smith.
* No longer use the deprecated C API for serialization to/from WKB and WKT. Now use the GEOS I/O classes, which are now exposed as `WKTReader`, `WKTWriter`, `WKBReader`, and `WKBWriter` (which supports 3D and SRID inclusion)
* Moved each type of geometry to their own module, eliminating the cluttered `geometries.py`.
* Internally, all C API methods are explicitly called from a module rather than a star import.
Fixed #9557, #9877, #10222
git-svn-id: http://code.djangoproject.com/svn/django/trunk@10131 bcc190cf-cafb-0310-a4f2-bffc1f526a37
2009-03-24 08:12:21 +08:00
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The GeoDjango GEOS module. Please consult the GeoDjango documentation
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for more details:
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http://geodjango.org/docs/geos.html
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2008-08-06 02:13:06 +08:00
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"""
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2013-05-11 11:08:45 +08:00
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try:
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from .libgeos import geos_version, geos_version_info, GEOS_PREPARE
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HAS_GEOS = True
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except ImportError:
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HAS_GEOS = False
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if HAS_GEOS:
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from .geometry import GEOSGeometry, wkt_regex, hex_regex
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from .point import Point
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from .linestring import LineString, LinearRing
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from .polygon import Polygon
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from .collections import GeometryCollection, MultiPoint, MultiLineString, MultiPolygon
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from .error import GEOSException, GEOSIndexError
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from .io import WKTReader, WKTWriter, WKBReader, WKBWriter
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from .factory import fromfile, fromstr
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